:root {
  --bg: #FAFAF8;
  --bg-alt: #F0EFEB;
  --fg: #1A1A2E;
  --fg-muted: #5C5C6F;
  --accent: #E8553A;
  --accent-light: #FFF0ED;
  --accent-dark: #C9412A;
  --success: #2D8F5E;
  --success-light: #E8F5EE;
  --navy: #1A1A2E;
  --navy-light: #2D2D44;
  --border: #E0DFD9;
  --radius: 12px;
  --radius-lg: 20px;
  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --max-width: 1120px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* NAV */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(250, 250, 248, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-icon {
  font-size: 24px;
  color: var(--accent);
}
.logo-text {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -0.5px;
  color: var(--fg);
}

/* HERO */
.hero {
  padding: 160px 24px 80px;
  background: var(--bg);
}
.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}
.hero-badge {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding: 8px 18px;
  border-radius: 100px;
  margin-bottom: 32px;
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 1.05;
  letter-spacing: -2px;
  color: var(--navy);
  margin-bottom: 28px;
}
.hero .highlight {
  color: var(--accent);
}
.hero-sub {
  max-width: 600px;
  font-size: 19px;
  color: var(--fg-muted);
  line-height: 1.6;
  margin-bottom: 56px;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--navy);
  border-radius: var(--radius-lg);
  padding: 32px 40px;
  max-width: 780px;
}
.stat {
  flex: 1;
  text-align: center;
}
.stat-num {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 36px;
  color: var(--accent);
  letter-spacing: -1px;
  margin-bottom: 6px;
}
.stat-label {
  display: block;
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  line-height: 1.4;
}
.stat-divider {
  width: 1px;
  height: 48px;
  background: rgba(255,255,255,0.12);
  margin: 0 12px;
}

/* PROBLEM */
.problem {
  padding: 100px 24px;
  background: var(--bg);
}
.problem-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}
.problem-label,
.how-label,
.diff-label {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent);
  margin-bottom: 40px;
}
.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.problem-card {
  padding: 44px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}
.problem-card.patient-side {
  background: var(--bg-alt);
}
.problem-card.practice-side {
  background: var(--navy);
  border-color: var(--navy);
  color: rgba(255,255,255,0.85);
}
.problem-card.practice-side .problem-who {
  color: var(--accent);
}
.problem-card.practice-side h3 {
  color: #fff;
}
.problem-who {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--fg-muted);
  margin-bottom: 16px;
}
.problem-card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 26px;
  line-height: 1.2;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}
.problem-card p {
  font-size: 16px;
  line-height: 1.65;
}

/* HOW IT WORKS */
.how {
  padding: 100px 24px;
  background: var(--bg-alt);
}
.how-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}
.how-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.step {
  display: flex;
  align-items: flex-start;
  gap: 40px;
  padding: 48px 0;
  border-bottom: 1px solid var(--border);
}
.step:last-child {
  border-bottom: none;
}
.step-number {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 64px;
  color: var(--accent);
  opacity: 0.25;
  line-height: 1;
  min-width: 80px;
  letter-spacing: -2px;
}
.step-content h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 24px;
  line-height: 1.25;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}
.step-content p {
  font-size: 16px;
  color: var(--fg-muted);
  max-width: 540px;
}

/* DIFFERENCE / COMPARISON */
.difference {
  padding: 100px 24px;
  background: var(--bg);
}
.difference-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}
.comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.comp-col {
  padding: 44px;
  border-radius: var(--radius-lg);
}
.comp-old {
  background: var(--bg-alt);
  border: 1px solid var(--border);
}
.comp-new {
  background: var(--navy);
}
.comp-header {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  margin-bottom: 28px;
  letter-spacing: -0.3px;
}
.comp-old .comp-header {
  color: var(--fg-muted);
}
.comp-new .comp-header {
  color: #fff;
}
.comp-col ul {
  list-style: none;
}
.comp-col li {
  padding: 12px 0;
  font-size: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid rgba(128,128,128,0.1);
}
.comp-col li:last-child {
  border-bottom: none;
}
.comp-old li {
  color: var(--fg-muted);
}
.comp-new li {
  color: rgba(255,255,255,0.85);
}
.x-mark {
  color: #C9412A;
  font-weight: 700;
  font-size: 14px;
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(201,65,42,0.1);
  border-radius: 50%;
}
.check-mark {
  color: var(--success);
  font-weight: 700;
  font-size: 14px;
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(45,143,94,0.2);
  border-radius: 50%;
}

/* CLOSING */
.closing {
  padding: 120px 24px;
  background: var(--navy);
  text-align: center;
}
.closing-inner {
  max-width: 720px;
  margin: 0 auto;
}
.closing h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.15;
  letter-spacing: -1px;
  color: #fff;
  margin-bottom: 28px;
}
.closing-sub {
  font-size: 18px;
  color: rgba(255,255,255,0.6);
  line-height: 1.65;
  margin-bottom: 20px;
}
.closing-vision {
  font-size: 18px;
  color: var(--accent);
  font-weight: 500;
  line-height: 1.65;
}

/* FOOTER */
.footer {
  padding: 40px 24px;
  background: var(--navy);
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-brand .logo-icon {
  font-size: 18px;
}
.footer-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: rgba(255,255,255,0.5);
}
.footer-meta {
  font-size: 14px;
  color: rgba(255,255,255,0.35);
}
.footer-dot {
  margin: 0 10px;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero { padding: 120px 20px 60px; }
  .hero h1 { letter-spacing: -1px; }
  .hero-stats {
    flex-direction: column;
    padding: 28px 24px;
    gap: 24px;
  }
  .stat-divider {
    width: 60px;
    height: 1px;
    margin: 0;
  }
  .problem-grid,
  .comparison {
    grid-template-columns: 1fr;
  }
  .problem-card {
    padding: 32px;
  }
  .step {
    flex-direction: column;
    gap: 12px;
    padding: 32px 0;
  }
  .step-number {
    font-size: 48px;
    min-width: auto;
  }
  .comp-col {
    padding: 32px;
  }
  .closing { padding: 80px 20px; }
  .footer-inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
  .problem, .how, .difference { padding: 72px 20px; }
}